Document Revision Date Airworthiness Directives (PDF, 102 KB) 0 1 Jul 2010 Airworthiness Notices (PDF, 244 KB) 27 9 Feb 2022 Singapore Airworthiness Requirements (PDF, 876 KB) 30 29 Mar 2022 Singapore Airworthiness Requirements (SAR) Part 21 - Certification of Production and Articles and of Design and Production Organisations (PDF, 704KB) 10 25 Jun 2021 Singapore Airworthiness Requirements (SAR) Part 39 - Airworthiness Directives (PDF, 46 KB) 3 3 Nov 2022 Singapore Airworthiness Requirements (SAR) Part 145 - Approved Maintenance Organisations (PDF, 869KB) 18 25 Jun 2021